Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 24 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

No open-market trades on record; showing all filings.

DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
Jan. 24, 2026 MSM M 50 · · 25 Direct -66.67% Disposed (price as of 2026-10-06)
Jan. 24, 2026 MSM M 695 · · 0 Direct -100.00% Disposed (price as of 2026-10-06)
Jan. 24, 2026 MSM M 50 · · 3,912 Direct +1.29% Acquired (price as of 2026-10-06)
Jan. 24, 2026 MSM M 695 · · 3,862 Direct +21.95% Acquired (price as of 2026-10-06)
Jan. 23, 2026 MSM A 1,603 · · 1,603 Direct · Acquired (price as of 2026-10-06)
Jan. 22, 2026 MSM M 24 · · 75 Direct -24.24% Disposed (price as of 2026-10-06)
Jan. 22, 2026 MSM M 799 · · 799 Direct -50.00% Disposed (price as of 2026-10-06)
Jan. 22, 2026 MSM M 24 · · 3,167 Direct +0.76% Acquired (price as of 2026-10-06)
Jan. 22, 2026 MSM M 799 · · 3,143 Direct +34.09% Acquired (price as of 2026-10-06)
Jan. 25, 2025 MSM M 50 · · 20 Direct -71.43% Disposed (price as of 2026-10-06)
Jan. 25, 2025 MSM M 777 · · 0 Direct -100.00% Disposed (price as of 2026-10-06)
Jan. 25, 2025 MSM M 50 · · 2,344 Direct +2.18% Acquired (price as of 2026-10-06)
Jan. 25, 2025 MSM M 777 · · 2,294 Direct +51.22% Acquired (price as of 2026-10-06)
Jan. 24, 2025 MSM M 20 · · 70 Direct -22.22% Disposed (price as of 2026-10-06)
Jan. 24, 2025 MSM M 695 · · 695 Direct -50.00% Disposed (price as of 2026-10-06)
Jan. 24, 2025 MSM M 20 · · 1,517 Direct +1.34% Acquired (price as of 2026-10-06)
Jan. 24, 2025 MSM M 695 · · 1,497 Direct +86.66% Acquired (price as of 2026-10-06)
Jan. 22, 2025 MSM A 1,598 · · 1,598 Direct · Acquired (price as of 2026-10-06)
Jan. 25, 2024 MSM M 26 · · 27 Direct -49.06% Disposed (price as of 2026-10-06)
Jan. 25, 2024 MSM M 776 · · 777 Direct -49.97% Disposed (price as of 2026-10-06)
Jan. 25, 2024 MSM M 26 · · 802 Direct +3.35% Acquired (price as of 2026-10-06)
Jan. 25, 2024 MSM M 776 · · 776 Direct · Acquired (price as of 2026-10-06)
Jan. 24, 2024 MSM A 1,390 · · 1,390 Direct · Acquired (price as of 2026-10-06)
Jan. 25, 2023 MSM A 1,553 · · 1,553 Direct · Acquired (price as of 2026-10-06)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.

06
DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
Jan. 24, 2026 MSM Dividend Equivalent Units Class A Common Stock, $0.001 par value (50) · · 50 Disposed
Jan. 24, 2026 MSM Restricted Stock Units (RSU) Class A Common Stock, $0.001 par value (695) · · 695 Disposed
Jan. 23, 2026 MSM Restricted Stock Units (RSU) Class A Common Stock, $0.001 par value (1,603) · · 1,603 Acquired
Jan. 22, 2026 MSM Dividend Equivalent Units Class A Common Stock, $0.001 par value (24) · · 24 Disposed
Jan. 22, 2026 MSM Restricted Stock Units (RSU) Class A Common Stock, $0.001 par value (799) · · 799 Disposed
Jan. 25, 2025 MSM Dividend Equivalent Units Class A Common Stock, $0.001 par value (50) · · 50 Disposed
Jan. 25, 2025 MSM Restricted Stock Units (RSU) Class A Common Stock, $0.001 par value (777) · · 777 Disposed
Jan. 24, 2025 MSM Dividend Equivalent Units Class A Common Stock, $0.001 par value (20) · · 20 Disposed
Jan. 24, 2025 MSM Restricted Stock Units (RSU) Class A Common Stock, $0.001 par value (695) · · 695 Disposed
Jan. 22, 2025 MSM Restricted Stock Units (RSU) Class A Common Stock, $0.001 par value (1,598) · · 1,598 Acquired
Jan. 25, 2024 MSM Dividend Equivalent Units Class A Common Stock, $0.001 par value (26) · · 26 Disposed
Jan. 25, 2024 MSM Restricted Stock Units (RSU) Class A Common Stock, $0.001 par value (776) · · 776 Disposed
Jan. 24, 2024 MSM Restricted Stock Units (RSU) Class A Common Stock, $0.001 par value (1,390) · · 1,390 Acquired
Jan. 25, 2023 MSM Restricted Stock Units (RSUs) Class A Common Stock, $0.001 par value (1,553) · · 1,553 Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 1 holding

07

Securities held when first becoming an insider, per SEC Form 3.

DateTickerSecuritySharesOwnership
Dec. 6, 2022 MSM Class A Common Stock, $0.001 par value 0 Direct